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                <div class="breadcrumbs"><a href="../index.html">quarkdown-stdlib</a><span class="delimiter">/</span><a href="index.html">com.quarkdown.stdlib.module.Optionality</a><span class="delimiter">/</span><span class="current">isnone</span></div>
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                    <h1 class="cover"><span><span>isnone</span></span></h1>
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                <div class="platform-hinted " data-platform-hinted="data-platform-hinted"><div class="content sourceset-dependent-content" data-active="" data-togglable=":quarkdown-stdlib/main"><div class="sample-container"><pre><code class="block lang-kotlin" theme="idea"><span class="token punctuation">.</span><span class="token function">isnone</span><span class="token punctuation"> </span><span class="token constant">value</span><span class="token operator">:</span><span class="token punctuation">{</span><span data-unresolved-link="com.quarkdown.core.function.value/Dynamic///PointingToDeclaration/">Dynamic</span><span class="token punctuation">}</span><span class="token punctuation"> </span><span class="token operator">-&gt; </span><span data-unresolved-link="com.quarkdown.core.function.value/Boolean///PointingToDeclaration/">Boolean</span></code></pre><span class="top-right-position"><span class="copy-icon"></span><div class="copy-popup-wrapper popup-to-left"><span class="copy-popup-icon"></span><span>Content copied to clipboard</span></div></span></div><span class="kdoc-tag"><h4 class="">Return</h4><p class="paragraph">whether <a href="isnone.html">value</a> represents a <a href="none.html">none</a> value</p></span><h4 class="">Parameters</h4><div class="table"><div class="table-row" data-filterable-current=":quarkdown-stdlib/main" data-filterable-set=":quarkdown-stdlib/main"><div class="main-subrow keyValue "><div class=""><span class="inline-flex"><div><u><span><span>value</span></span></u></div></span></div><div><div class="title"><p class="paragraph">value to check</p></div></div></div></div></div><h4 class="">See also</h4><div class="table"><div class="table-row" data-filterable-current=":quarkdown-stdlib/main" data-filterable-set=":quarkdown-stdlib/main"><div class="main-subrow keyValue "><div class=""><span class="inline-flex"><div><a href="none.html"><span><span>none</span></span></a></div></span></div><div></div></div></div></div><span class="kdoc-tag"><h4 class="kdoctag">Chaining</h4><a href="#anchor__likely-chained"></a>This function is designed to be <a href="https://github.com/iamgio/quarkdown/wiki/syntax-of-a-function-call#chaining-calls">chained</a> with other function calls:<div class="sample-container"><pre><code class="block lang-kotlin" theme="idea"><span data-unresolved-link="com.quarkdown.core.function.value/Dynamic///PointingToDeclaration/">Dynamic</span><span class="token punctuation">::</span><span class="token function">isnone</span><span class="token punctuation"> </span><span class="token operator">-&gt; </span><span data-unresolved-link="com.quarkdown.core.function.value/Boolean///PointingToDeclaration/">Boolean</span></code></pre><span class="top-right-position"><span class="copy-icon"></span><div class="copy-popup-wrapper popup-to-left"><span class="copy-popup-icon"></span><span>Content copied to clipboard</span></div></span></div></span><span class="kdoc-tag"><h4 class="kdoctag">Wiki page</h4><a href="https://github.com/iamgio/quarkdown/wiki/None">None</a></span></div></div>
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